20618758327 has 2 divisors, whose sum is σ = 20618758328. Its totient is φ = 20618758326.

The previous prime is 20618758297. The next prime is 20618758331. The reversal of 20618758327 is 72385781602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20618758327 - 2¹⁵ = 20618725559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20618758367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10309379163 + 10309379164.

It is an arithmetic number, because the mean of its divisors is an integer number (10309379164).

Almost surely, 2^20618758327 is an apocalyptic number.

20618758327 is a deficient number, since it is larger than the sum of its proper divisors (1).

20618758327 is an equidigital number, since it uses as much as digits as its factorization.

20618758327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 20618758327 in words is "twenty billion, six hundred eighteen million, seven hundred fifty-eight thousand, three hundred twenty-seven".